ASTROSAT CZTI

Data Quality Report

Orbit 18022

Creation date: 2024-06-27T17:43:59.136601
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_159T01_9000002678_18022cztM0_level2.evt modeM0/AS1A05_159T01_9000002678_18022cztM0_level2_quad_clean.evt
Size (bytes)498,553,920105,972,480
Size475.5 MB 101.1 MB
Events in quadrant A3,390,893718,680
Events in quadrant B3,433,465715,987
Events in quadrant C3,558,040674,423
Events in quadrant D4,287,776659,434

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138531
B0139261
C0145841
D0167721

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6318911.440329%
B63191241.962336%
C63191071.693306%
D63192724.304479%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7488 6319 18 18 0.24% 0.28%
B 7489 6320 37 37 0.49% 0.59%
C 7489 6320 0 0 0.00% 0.00%
D 7489 6320 179 179 2.39% 2.83%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 4 2 107044 631.24 833 820 168.3
A 15 174 84283 495.98 833 820 168.3
A 0 226 7371 38.93 833 820 168.3
B 7 220 140142 898.08 821 805 155.1
B 5 172 26376 164.82 821 805 155.1
B 0 229 17409 107.02 821 805 155.1
C 3 233 267541 1455.53 784 793 183.3
C 14 238 123534 669.75 784 793 183.3
C 0 207 92359 499.64 784 793 183.3
D 5 222 547626 2860.75 794 773 191.2
D 11 176 509763 2662.67 794 773 191.2
D 7 38 89987 466.7 794 773 191.2

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter